<template>
    <div class="goodsinfo-container">
        <transition
            @before-enter="beforeEnter"
            @enter="enter"
            @after-enter="afterEnter">
            <div class="ball" v-show="ballFlag" ref="ball"></div>
        </transition>

        <!-- 商品轮播图区域 -->
        <div class="mui-card">
            <div class="mui-card-content">
                <div class="mui-card-content-inner"> 
                    <swiper :lunbotuList="lunbotu" :isfull="false"></swiper>
                </div>
            </div>
        </div>

        <!-- 商品购买区域 -->
        <div class="mui-card">
            <div class="mui-card-header">{{goodsinfo.title}}</div>
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                    <p class="price">
                        市场价：<del>￥{{goodsinfo.market_price}}</del>
                        &nbsp;&nbsp;
                        销售价：<span class="now_price">
                            ￥{{goodsinfo.sell_price}}
                        </span>
                    </p>
                    <p>购买数量：<numbox @getcount="getSeletedCount" 
                    :max="goodsinfo.stock_quantity"></numbox></p>
                    <p>
                        <mt-button type="primary" size="small">buy it now</mt-button>
                        <mt-button type="danger" size="small" @click="addToShopCar">Add To Shopcar</mt-button>
                    </p>
                </div>
            </div>  
        </div>

        <!-- 商品参数区域 -->
        <div class="mui-card">
            <div class="mui-card-header">Goods Parameter</div>
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                    <p>商品货号：{{goodsinfo.goods_no}}</p>
                    <p>库存情况：{{goodsinfo.stock_quatity}} 件</p>
                    <p>上架时间：{{goodsinfo.add_time|dataFormat}}</p>
                </div>
            </div>
            <div class="mui-card-footer">
                <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
                <mt-button type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
            </div>
        </div>
    </div>
</template>

<script>
import swiper from "../subcomponents/swiper";
import numbox from "../subcomponents/goodsinfo_numbox"

export default {
    data(){
        return {
            id:this.$route.params.id,
            lunbotu:[],
            goodsinfo:{},
            ballFlag:false,
            selectedCount:1
        }
    },
    created(){
        this.getLunbotu();
        this.getGoodsInfo();
    },
    methods:{
        getLunbotu(){
            this.$http.get("api/getthumimages/"+this.id).then(result=>{
                if(result.body.status===0){
                    result.body.message.forEach(item => {
                        item.img=item.src;
                    });
                    this.lunbotu=result.body.message;
                }
            })
        },
        getGoodsInfo(){
            this.$http.get("api/goods/getinfo/"+this.id).then(result=>{
                if(result.body.status===0){
                    this.goodsinfo=result.body.message[0]
                }
            })
        },
        goDesc(id){
            this.$router.push({name:"goodsdesc",params:{id}})
        },
        goComment(id){
            this.$router.push({name:"goodscomment",params:{id}})
        },

        addToShopcar(){
            this.ballFlag=!this.ballFlag;
            var goodsinfo={
                id:this.id,
                count:this.selectedCount,
                price:this.goodsinfo.sell_price,
                selected:true
            };
            this.$store.commit("addToCar",goodsinfo);
        },
        beforeEnter(el){
            el.style.transform="translate(0,0)";
        },
        enter(el,done){
            el.offsetWidth;
            const ballPosition=this.$refs.ball.getBoundingClientRect();
            const badgPosition=document
                .getElementById("badge")
                .getBoundingClientRect();
            const xDist=badgPosition.left-ballPosition.left;
            const yDist=badgPosition.top-ballPosition.top; 
            
            el.style.transform='translate(${xDist}px,${yDist}px)';
            el.style.transition="all 0.5s cubic-bezier(.4, -0.3, 1, .68)";
            done();
        },
        afterEnter(el){
            this.ballFlag=!this.ballFlag;
        },
        getSelectedCount(count){
            this.selectedCount=count;
        }
    },
    components:{
        swiper,
        numbox
    }
}
</script>

<style lang="scss" scoped>
.goodsinfo-container{
    background-color: #eee;
    overflow: hidden;

    .now_price{
        color: red;
        font-size: 10px;
        font-weight: bold;
    }

    .mui-card-footer{
        display: block;
        button{
            margin: 15px 0;
        }
    }
    .ball{
        width: 15px;
        height: 15px;
        border-radius: 50%;
        background-color: red;
        position: absolute;
        z-index:99;
        top: 390px;
        left:146px;
    }
}
</style>